tpad takes a long time to open large documents.

A nice feature about tpad is the ability to quickly enable or disable cretin features. Each feature you have enabled will slow things down. For small documents this slowdown is too small for most people to notice or care about. When you are trying to open a huge text document the difference can be substantial.

If you look under the "Settings" menu it is broken into three parts. The top part has optional features, the middle sets the display font, and the bottom has misc. items such UI settings.

The top part, the optional features, that is what effects how fast tpad can open a document the most. The more features you disable the faster tpad will be able to open documents. Of all of the optional features, the one that has the most impact seems to be spell checking.

How to turn features on and off: A check mark means that a feature is enabled. No check mark means the feature is disabled. You can toggle the features on or off by clicking on them once. If a feature seems suck, try toggling it on and off. If that fails to fix it, first exit all running instances of tpad:

 /bin/kill -TERM $(pidof tpad)

Next open one instance of tpad, make the change and exit tpad. Reopen tpad. If the change is not preserved tpad may be having problems writing and reading its configuration file. Are you running tpad is another user? tpad (hidden) configuration file is in the home directory of the user running the program. If that file becomes invalid for whatever reason or if it is missing, tpad will remove the invalid file and write a default configuration file. If this happens a message will be displayed informing the end user of what happened if possible why.

If tpad is unable to read/write to this file in the user's home directory changes to settings will not be remembered by tpad because such changes are remembered in said file.

Sometimes you can have a situation where tpad can read its configuration file but can not write to it or remove it. This will in effect break tpad until fixed by the user / system admin.